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These commands produce an output file "figure.png" that is 600 pixels wide and 400 pixels tall. The plot will fill the lower left quarter of this canvas. This You can pass parameters based on extwidth as long as they are in the set size ratio 0.3 plot [0:2pi] sinx with lines linewidth 2 title 'Sine' end{gnuplot} In Use to specify the font (default is "Times-Roman"), and to specify the font size (default is 14.0 pt). The aqua terminal supports enhanced specified, pixels are assumed; if either cm or in is given, the size is converted to pixels, assuming 72 pixels per inch. For PDF and EPS, the size defaultsThe default size for the output is 5 inches x 3 inches. The size option changes this to whatever the user requests. By default the X and Y sizes are taken to be set term 5#5terminal_type6#6 size 5#5XX6#6, 5#5YY6#6 controls the size of the output file, or canvas. Please see individual terminal documentation for allowed The default size for the wxt terminal is 640x384 pixels (see the documentation or help terminal wxt in the interactive terminal).